Electromagnetic valve.



PATENTED OCT. 24, 1905.

I. G. WATERMAN. ELECTROMAGNETIC VALVE APPLICATION FILED JULY 9, 1903.

2 SHEBTS-BHEET 1.

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ELECTROMAGNETIC VALVE. VAPPLIOATION FILED JULY 9, 1903.

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V ISAAC Gr. WATERMAN, OF SANTA BARBARA, CALIFORNIA.

ELECTROMAGNETIC VALVE.

Specification of Letters Patent.

Patented oct. 24, 1905.

Application filed July 9,1903- Serial No; 164,888.

To all whom it may concern:

Be it known that I, IsAAo G. WATERMAN, a citizen of the United States. residing at Santa Barbara, in the county of Santa Barbara and State of California, have invented new and useful Improvements in Electromagnetic Valves, of which the following is a specification.

This invention relates to electromagnetic valves.

In a series of applications on electromagnetic valves which I have filed heretofore two independent magnets or solenoids are used, which are energized alternately to operate an armature and open and'close a valve.

The present invention is designed as an improvement on the foregoing type of electromagnetic valves, and has for its objectthe dispensing with one of the magnet coils or solenoids and the utilization of only one solenoid or magnet to perform the operations of opening and closing the valve, thereby simplifying and cheapening the valve.

Another object of the invention is to guide the valve-operating armature in the solenoid to insure smoothness of operation.

A still further object is to provide an electromagnetic valve in which the electromagnet or solenoid embraces the fluid-conveying tube or pipe and wherein the armature will operate longitudinally of the said tube or pipe, thereby obtaining great compactness of construction, strength, simplicity, and neatness of appearance, beside affording suitable guiding means for the slidable armature.

Having the foregoing objects in view, the invention embraces certain improved features of construction and novel'combinations and adaptations of parts, as set forth fully hereinafter, and recited in the appended claims.

' The following specification sets forth certain forms the invention may assume, and the novel features of this form, as well as the invention itself, broadly, pended claims.

In the accompanying drawings, Figure 1 is a sectional elevation with certain parts in full lines; Fig. 2, a section on line 02 :v of Fig. 1, showing certain parts in full lines; Fig. 3, a detail bottom plan of the head of the armature; Fig. 4, a detail showing a modification of the pawl and ratchet; Fig. 5, a sectional elevation of a modification to be used directly on the fluid-pipe; 'Fig. 6, a section on line y ;z of Fig. 5, and Fig. 7, a section on line of are recited in the ap- Fig. 5.

Referring first to Figs..1, 2, 3, and 4, the

eonstitutinga valve-easing 3, having a fluidpassage 4 extending therethrough. The fluidsupply-pipe sections 5 and 6 are let through the sides of the shell 1 and screwed into the casing 3 in alinement with the passage 4. The plug-valve 7 has port8 extending therethrough and is suitably seated to turn in the casing 3, being held in its seat by the screw and Washer 9. At its larger end said valve has a ratchet or toothed wheel 10 secured thereto, the teeth of which are arranged in pairs. Secured in the head of the shell 1 and extending centrally of theopening in thesolenoid and screwedinto the valve-easing3 is aguide-rod 11, havinga spline 12. The numeral13 representsa tubular armamg in the solenoid, said armature having a keyway which receives the spline 12, thus preventing turning of the armature. .A spring 14 tends to keep the armature projected. At the lower end of the armature there is a head 15, preferably of iron, to increase the magnetic attraction of the armature when the so lenoid is energized, said head having a buffer 16 of suitable material adapted to cushion the impact and deaden the sound when the armature is drawn into the solenoid and the head against the end of the solenoid. Suitably pivoted to the head 15 is a pawl 17, having two teeth 18 to engage the sets of teeth of the ratchet 10, said pawl being pressed by a spring 19. A spring-pressed dog 20, pivoted to the casing 3, is adapted to engage the teeth of the ratchet-wheel 10 and prevent backward movement thereof. Y In'the modification shown in Fig. 4 the ratchet-wheel 10 has single teeth 10, and the A pawl 17 has but a single tooth 17.

A suitable switch, such as any of the temporary-contact switches disclosed in my Patents NOS. 775,016, 775,052, 775,053, 775,055,

dated November 15, 1905, may be employed.

On sending a temporary current through the solenoid the armature is attracted thereby, whereupon the pawl 17 turns the ratchetwheel a quarter-revolution, opening or closing the plug-valve 7, as the case may be. On cessation of the current the solenoid is deenergized, and the spring and gravity of the armature cause-it to assume the position shown in Fig. 1, the pawl meanwhile riding idly on the ratchet-wheel and the latter being prekeyway 21 vented from turning backward by the dog 20. The valve remains Where positioned (either open or closed) until the solenoid is. again energized and the foregoing operations repeated, whereupon the valve is given another quarter-turn. 'llhus alternate energizations of the solenoid cause alternate openings and closings of the valve.

In the construction shown in Figs. 5, 6, and 7 the shell 1 is centered on the sections 5 and 6 of the fluid-supply pipe, thus rendering the construction more compact, strong, durable, simple, and neat in appearance. In this form the guide-rod 11 is dispensed with, and the armature slides on the pipe-section 5 and is guided thereby, the spring 14: normally projecting the armature from the solenoid.

The pipe-sections 5 and 6 screw into the valvecasing 3 in the manner heretofore described. To prevent turning of the armature, a pin and and 22 are used. The action of this type of valve is the same as that of the other typepreviously described.

My invention having, broadly, for its essential features the provision of a solenoid embracing the tube or pipe and the operation of a valve which controls said pipe by the utilization of an armature slidable longitudinally of the pipe and into the solenoid, I wish it understood that the type of valve employed and the details of construction can be varied as desired, and I do notintend to restrict myself to the use of a rotary valve or to details of construction except as specifically recited in the claims, nor is the invention necessarily limited in respect of the feature of guiding the armature or placing the solenoid around the pipe-section, as they may be disposed at an angle thereto, as shown in Figs. 1 and L of the drawings.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

- 1. In an electromagnetic valve, the com bination with a solenoid, of a guiding mem ber extending in the direction of the longitudinal axis of the solenoid, an armature slidable in the solenoid and on the guiding member aforesaid, a rotary valve, a ratchet-wheel for operating said rotary valve, a pivoted pawl carried by the armature adapted to engage the ratchet-wheel to operate the valve, and a spring encircling the guiding member and adapted for projecting the armature from the. solenoid.

2. In an electromagnetic valve, the combination with a fluid-conveying tube or pipe section, of a solenoid embracing said fluidconveying tube or pi e section, an armature slidable longitudinal y of the tube or pipe section and into the solenoid, a valve, an means for operating the valve from the armature.

3. In an electromagnetic bination'with a valve, the comfluid-conveying tube or pipe section, of a solenoid embracing said tube or pipe section, an armature slidable longitudinally of the tube or pipe section and into the solenoid, a spring projecting the armature, a valve, and means for operating the valve from the armature.

4. In an electromagnetic valve, the combination with a fluid-conveying tube or pipe section, of a solenoid embracing said tube or ipe section, an armature slidable longitudinally of the tube or pipe section and into the solenoid, a valve controlling the tube or pipe section, means for maintaining the valve in either open or closed osition, and means for operating the valve 'rom the armature but once to either open or close the same on each complete forward and return movement of the armature under the control of the solenoid.

5. In an electromagnetic valve, the combination with a fluid-conveying tube or pipe section, of a solenoid embracing the tube or ipe section, an armature slidable longitudinally of the tube or pipe section and into the solenoid, a spring for projecting the armature, a rotary valve controlling the flow through the tube or pipe section, a ratchet wheel for turning said valve, a dog for preventing backward turning of the valve, and a pawl carried by the armature and engaging with the ratchet-wheel on one movement of the armature and disengaging from the ratchet-wheel on the other movement of the armature, said parts being so correlated that on a given energization 'of the solenoid the valve will be either opened or closed according to its previous condition and there maintamed, and successive energizations of the solenoid will alternately open and close the valve.

6. In an electromagnetic valve, the combination with a fluid-supply tube or pipe section, of a valve, an armature slidable on said tube or pipe section and adapted for operating the valve, and an eleotromagnet controlling said armature.

7.. In an electromagnetic valve, the combination with a fluid-supply tube or pipe section, of a valve, an armature slidable on said tube or pipe section and adapted for operating the valve, and a coil or solenoid in which the armature is adapted to play.

8. In an electromagnetic valve, the combination with a fluid-supply tube or pipe section, of a valve, a tubular armature encircling and slidable on said tube or pipe section and adapted for operating the valve, and a solenoid in which the armature is adapted to lay.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' ISAAC G. WATERMAN.

Witnesses:

ELMER SEAVEY, JoHN H. LING. 

